Marine grade stainless steel to be rust resistant, strong endurance, durable in all conditions, even salt water. High Quality: This item is made of made of high quality stainless steel, lightweight, anti-rust, colorfast and durable.Moreover,it is processed mirror polished, the cup holder shows a smooth and elegant appearance,beautiful and practical,not easy to damage and discolor after long time use. Widely Application: Wide range of applications, suitable for boats / yachts / trucks / cars / apartments / RVs.With ours boat ring cup holder, it will be your best partner for daily life. Don't have to hold on to the cup all the time,easily liberate your hands. Easy Installation: It can be installed next to your central control, so you can enjoy your favorite drinks at any time even while driving.Easy installation, direct fit replacement unit, convenient for using.Easy installation, no complex procedures, perfect match for your boats / yachts / trucks / cars / apartments / RVs. High Performance: It can effectively prevent the drink container from sliding sleek appearance to suit today's modern watercraft.It provides a sturdy and reliable location for the drink on the boat.You can easily free your hands and do what you like freely. Which is an important accessory and easy to use.